I'm currently learning HTML / CSS / JS, and by applying what i learned, I'm making a Website. Overtime, i saw that i keep copying and paste some code like the header for exemple or the footer. Some weeks ago i watched a video in fireship.io's youtube channel about Astro. Today i decided to take a look in this astro.new template.
What i found really useful was those custom components that you create in a JavaScript file and import in a .astro file and just write <Header />. I was amazed about that. It's exatcly WHAT I WANTED. Then i looked a react.new codeSandBox project and found the same thing. I quickly create a header by following the example of App.js and worked well.
Now all i want to ask is what is the name given to those frameworks if they have one.